Adjustable trestle.



,,PATENTBD JULY 16, 1907.

C. H. THOMAS. ADJUSTABLE TRESTLE.

APPLICATION FILED P33. 26, 1907.

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UNITED STATES PATENT oEEIoE.

CHARLES H. THOMAS, OF COLUMBUS, OHIO, ASSIGNOR OF ONE-HALF TO DAVID J.LAMP,

' OF REYNOLDSBURG, OHIO.

ADJUSTABLE TRESTLE.

N 0. 860,161. Specification of Letters Patent. Patented July 16, 1907.

Application filed February 25, 1907. Serial No. 359,075.

To all whom it may concern: narily suffice to revent slipping of thelegs after ad Be it known that I, OHARLEs H. THOMAS, a citizen justment.To prevent the legs from slipping out when of the United States,residing at Columbus, in the the device is lifted about I can use setscrews 8 to pinch county of Franklin and State of Ohio, have invented athe legs against the upper wall of the passage. certain new and usefulImprovement in Adjustable To secure steadiness the horizontal passage ofeach Trestles, of which the following is a specification. block 3 ismade at a slightly obtuse angle to the plane The object of thisinvention is to provide for the use of the passages for the legs, thuscausing an outward inof plasterers, paper-hangers, carpenters, and otherarclination of each pair of legs to the horizontal support tisans animproved horse or trestle that shall be ador ledger.

justable as to both its height and its length. From this construction itwill be observed that the The invention consists in the constructionhereinhorse or trestle is adapted to very small as well as Very afterdescribedand claimed. large rooms, either as to their height or lengthand In the accompanying drawingsFigure 1 is a per- Width, and hence isespecially useful-for plasterers and spective view of one end, showing aportion also of the paper-hangers.

supporting bar of the opposite end, the opposite ends I am cognizant ofthe United States patents issued to being substantial duplicates of eachother. Fig. 2 is a Hughes N 0. 319,723, June 9, 1885, and Jones N o.

sectional view on a plane, including the line xx Fig.1. 495,492, April18, 1893, and do not wish to be underln the views 3 designates endblocks or castings oi stood as attempting to Claim y g Shown y Saidironor other metal of approximately parallelepiped. P

form but made hollow and frame-like for the purpose What I Claim and irto Secure by Letters Patof reducing its weight. In the walls of theblock are But 1S1 made openings or passages, as shown at 33 and 3 th l.A trestle comprising two integral end blocks each provided with opposingdiagonal through passages in approxigenei al direction of which isoblique to the longitudinal mately Vertical planes and a horizontalpassage intersect axis of the block These Oblique Openings are formeding said planes above the line of intersection of said dingin differentplanes in the block and at angles to each onal passages, a wall of eachof said diagonal passages other, and are designed to freely receivewooden legs being Provided Wi a p netrating edge, legs assing 4 and 5 Inthe block above the intersection of the through and adjustable bymovement through said diagc onal passages, and a supporting bar loose insaid horizonplanes of the legs 1s provided a horizontal opening 3 m1passages throu h which is freel assed the wooden-ledger or 2. In anadjustable trestle, an end block provided with s y P r supporting bar 6.The ledger or supporting bar can an oblique passage to receive an adustable leg, the wall be made in several parts, a fraction of anadditional part of Sald pl'ovlded wlth a penetrating 3 p b 1 1d a th b t3. In an adgustable trestle, an end block plOVlClGd with belngdeslgnated 6 an can 6 1e tone 61 u an oblique passage to receive anadjustable leg, the wall so as to be lon itudinall ad ustable b means ofmetal of said passage provided with a penetrating edge, and a e y Yyokes 7 Th upper ll f th lower ti f th set screw in said block to pressthe leg toward said penepassages 3 and 3 can be beveled or sharpened asseen tl'atmg edge .1) to penetrate the wood of ,the legs tpprevent pos-Witnesses sible slipping of them, butthe mere obliquity of the BENJAMINE passages and weight of the block and ledger will ordi- LICE B CO K.

CHARLES H. THOMAS.

